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Question about the task

Describing numbers

Java Syntax, Level 4, Lesson 7

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A little hint would be appreciated.

Enter an integer from the keyboard in the range 1 - 999. Display a string description as follows:
"even single-digit number" - if the number is even and has one digit,
"odd single-digit number" - if the number is odd and has one digit,
"even two-digit number" - if the number is even and has two digits,
"odd two-digit number" - if the number is odd and has two digits,
"even three-digit number" - if the number is even and has three digits,
"odd three-digit number" - if the number is odd and has three digits.
If the entered number does not fall in the range 1 - 999, don't display anything.

Example for 100:
even three-digit number

Example for 51:
odd two-digit number

Requirements:

The program should read one number from the keyboard.
The program should use System.out.println() or System.out.print()..
If the number is even and has one digit, display "even single-digit number".
If the number is odd and has one digit, display "odd single-digit number".
If the number is even and has two digits, display "even two-digit number".
If the number is odd and has two digits, display "odd two-digit number".
If the number is even and has three digits, display "even three-digit number".
If the number is odd and has three digits, display "odd three-digit number".
If the entered number doesn't fall in the range 1 - 999, don't display anything
The program should display a string description of the number and nothing else.

package com.codegym.task.task04.task0427; /* Describing numbers */ import java.io.*; public class Solution { public static void main(String[] args) throws Exception { //write your code here BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String s = br.readLine(); int num = Integer.parseInt(s); if (num < 10) { if (num % 2 == 0) { System.out.println("even single-digit number"); } else { System.out.println("odd single-digit number"); } } else if (num > 9 && num < 100) { if (num % 2 == 0) { System.out.println("even two-digit number"); } else { System.out.println("odd two-digit number"); } } else if ( num > 99 && num < 1000) { if (num % 2 == 0) { System.out.println("even three-digit number"); } else { System.out.println("odd three-digit number"); } } } }

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Angelo Tratsis

Level 8 , Boston, United States

25 March 2021, 02:03

package com.codegym.task.task04.task0427;

/*
Describing numbers

*/

import java.io.*;

public class Solution {
    public static void main(String[] args) throws Exception {
        //write your code here
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        int number = Integer.parseInt(reader.readLine());

        if (number >= 1 && number <= 999) {
            if (number % 2 == 0 && number >= 0 && number < 1000) {
                if (number >= 0 && number < 10) {
                    System.out.println("even single-digit number");
                } else if (number >= 10 && number < 100) {
                    System.out.println("even two-digit number");
                } else if (number >= 100 && number < 1000) {
                    System.out.println("even three-digit number");
                }
            }
            if (number % 2 != 0 && number >= 0 && number < 1000) {
                if (number >= 0 && number < 10) {
                    System.out.println("odd single-digit number");
                } else if (number >= 10 && number < 100) {
                    System.out.println("odd two-digit number");
                } else if (number >= 100 && number < 1000) {
                    System.out.println("odd three-digit number");
                }
            }
        }
    }
}

George Garnand

Level 7 , Not in list, United States

2 November 2020, 19:45

*/ import java.io.*; public class Solution { public static void main(String[] args) throws Exception { //write your code here BufferedReader r = new BufferedReader(new InputStreamReader(System.in)); double a = Double.parseDouble(r.readLine()); if (a>=1 && a<=999) { if (odd(a)) System.out.println("odd "+cnt(a)+"-digit number"); else System.out.println("even "+cnt(a)+"-digit number"); } } static boolean odd(double n){ if (n%2 != 0) return true; else return false; } static String cnt(double b){ if (b/100 >=1 ) return "three"; else if (b/10 >=1) return "two"; else return "single"; } }

Lorenzo Cammerinesi

Level 7 , London, United Kingdom

16 November 2020, 17:24

I like how you think

Maria

Level 22 , Moscow, Russian Federation

7 October 2020, 14:40

also works

</package com.codegym.task.task04.task0427;

/*
Describing numbers

*/

import java.io.*;
import java.util.Scanner;

public class Solution {
    public static void main(String[] args) throws Exception {
        //write your code here
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int ab = abs(a);
        int b = abs(a%10);

        if ((ab>=1 && ab<=9) && (b == 1 || b == 3 || b == 5 || b == 7 || b == 9)) {
            System.out.println("odd single-digit number");
        }
        else if ((ab>=10 && ab<=99) && (b == 1 || b == 3 || b == 5 || b == 7 || b == 9)) {
            System.out.println("odd two-digit number");
        }
        else if ((ab>=100 && ab<=999) && (b == 1 || b == 3 || b == 5 || b == 7 || b == 9)) {
            System.out.println("odd three-digit number");
        }
        else if ((ab>=1 && ab<=9) && (b == 0 || b == 2 || b == 4 || b == 6 || b == 8)) {
            System.out.println("even single-digit number");
        }
        else if ((ab>=10 && ab<=99) && (b == 0 || b == 2 || b == 4 || b == 6 || b == 8)) {
            System.out.println("even two-digit number");
        }
        else if ((ab>=100 && ab<=999) && (b == 0 || b == 2 || b == 4 || b == 6 || b == 8)) {
            System.out.println("even three-digit number");
        }
    }

    public static int abs(int a) {
        if (a < 0) {
            return -a;
        }
        else
            return a;
    }
}
>

Ryan Ceasar Borromeo

Level 7 , Makati, Philippines

21 March 2020, 02:54

It's long but it is working.....

import java.io.*;
import java.util.Scanner;

public class Solution {
    public static void main(String[] args) throws Exception {
        //write your code here

        Scanner scanner = new Scanner(System.in);

        int num = scanner.nextInt();
        int count = 0;

        int inputNumber = number(num);

        for(; num != 0; num/=10, ++count)
        {
        }

        if (num > 999 && num < 0) {

        }


        if(inputNumber % 2 == 0 && count == 1)
        {
           System.out.println("even single-digit number");
        }
        else if(inputNumber % 2 != 0 && count == 1 )
        {
            System.out.println("odd single-digit number");
        }
        else if (inputNumber % 2 == 0 && count == 2)
        {
            System.out.println("even two-digit number");
        }
        else if(inputNumber % 2 != 0 && count == 2)
        {
            System.out.println("odd two-digit number");
        }
        else if(inputNumber % 2 == 0 && count == 3)
        {
            System.out.println("even three-digit number");
        }
        else if(inputNumber % 2 != 0 && count == 3 )
        {
            System.out.println("odd three-digit number");
        }

    }

    public static int number(int num) {
        int inputNum = num;
        return inputNum;
    }
}

Qadir Khan

Level 9 , Germany

19 November 2019, 21:29

//here is the simple solution public class Solution { public static void main(String[] args) throws Exception { //write your code here BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); int number = Integer.parseInt(reader.readLine()); int length = String.valueOf(number).length(); if(number <= 999 && number >= 1) if ( number % 2 == 0 && length == 1) System.out.println("even single-digit number"); else if ( number % 2 != 0 && length == 1) System.out.println("odd single-digit number"); else if ( number % 2 == 0 && length == 2) System.out.println("even two-digit number"); else if ( number % 2 == 0 && length == 3) System.out.println("even three-digit number"); else if ( number % 2 != 0 && length == 2) System.out.println("odd two-digit number"); else if ( number % 2 != 0 && length == 3) System.out.println("odd three-digit number");